fall back on
柯林斯词典
1. PHRASAL VERB If you fall back on something, you do it or use it after other things have failed. 转而使用
When necessary, instinct is the most reliable resource you can fall back on. 必要时，本能是你可使用的最可靠的资源。
返回 fall back on
1. PHRASAL VERB If you fall back on something, you do it or use it after other things have failed. 转而使用
When necessary, instinct is the most reliable resource you can fall back on. 必要时，本能是你可使用的最可靠的资源。